Question

Thompson Photo Works purchased several new, highly sophisticated processing machines. The production department needed some guidance with respect to qualifications needed by an operator. Is age a factor? Is the length of service as an operator (in years) important? In order to explore further the factors needed to estimate performance on the new processing machines, four variables were listed: x = Length of time an employee was in the industry x2 = Mechanical aptitude test score x3 = Prior on-the-job rating XA = Age Performance on the new machine is designated y. Thirty employees were selected at random. Data were collected for each, and their performances on the new machines were recorded. A few results are: Name Mike Miraglia Sue Trythall Performance on New Machine, y 110 120 Length of Time in Industry, X1 3 10 Mechanical Aptitude Score, x2 385 347 Prior On-the-Job Performance, X3 128 117 X4 44 30 The equation is: y = 10.4 +0.3x2 +0.686x2 +0.412x3 +0.003X4 a. What is this equation called? O Multiple regression equation O Multiple standard error of estimate

Answer 1

Result:

a).

Multiple regression equation

b).

1 dependent   4 independent

c).

Regression coefficient.

d).

when x1=5, x2=290, x3=90, x4=39

estimated y =10.4+0.3*5+0.686*290+0.412*90+0.003*39

=248.037